| Abbreviation | Definition |
|---|---|
| AIRTEMS | Airtemps |
| AIRU | Advanced Inertial Reference Unit |
| AIRU | Associazione Italiana Riscaldamento Urbano |
| AIS | Abstracters Information Service |
| AIS | Accounting Information Standards |
| AIS | Address Information System |
| AIS | Administrative Information Service |
| AIS | AlHuda International School |
| AIS | All Integrated Solutions |
| AIS | American Indian Studies |
| AIS | American Industrial Systems |
| AIS | American Iris Society |
| AIS | American Iron and Steel |
| AIS | Annual Insights Symposium |
| AIS | Applicant Information System |
| AIS | Application Interface Standard |
| AIS | Aquatic Invasive Species |
| AIS | Article Information Sheet |
| AIS | Asset Interface System |
| AIS | Assets Information and Services |